Gas-mixture producer.



A. P. BRUSH, GAS MIXTURE PRODUCER. APPLICATION FILED MAR. 21, 1912.

1 ,O82,007, Patented D60. 23, 1913.

ALANSON P. BRUSH, 013 DETROIT, MICHIGAN.

GAS-MIXTURE PRODUCER.

Specification of Letters Patent.

Patented 1) cc. 23,1913.

Application filed March 21, 1912. Serial No. 685,239.

7 '0 all 2127mm If may concern lie it known that. l. Amxsox P. llai sir, a citizen of the l nited Fltatcs. residing at Detroit. in the county of. W'ayne and State of Michigan. have invented a certain new ditions to which it may be subjected (as a result, for example. of turning oft the spark when the engine is running slow or when it is running 'l'ast) whereby the cylinders will be uniformly charged with explosive gases of such volume and quality that when an igniting spark is produced therein the engine will surely start.

The .invention as shown is embodied in a device having a mixing chamber whose outlet is to be connected with the engine manifold so that it may be subjected to the varying conditions of partial vacuum produced by the induction strokes of the engine pistons when moving at different velocities.

This mixing chamber containing a suction controlled valve by which the size of the outlets from said mixing chamber may be varied, (decreased as the pressure at the outlet passage is reduced, and vice versa) whereby to obta n an approximately uni form pressure or partial vacuum condition within the mixing chamber, said mixing chamber having an air inlet, and a gas inlet of the required relative sizes to supply air and gas in the proper proportions.

In the drawings, Figure 1 is a plan view of the device embodying the invention; and Fig. 52 is a central vertical sectional view thereof.

Referring to the parts by letters. A represents a cylinder which. together with its cap it. l'orms the mixing chamber. 'lhis '(Jllllll'lldfl has an annular mixture outlet near its top. said outlet comprising one or more holes a" through the side wall. The cap B contains an annular recess in its depending llange. which Forms, when the cap is screwed onto the cylinder an annular mixture passage Z). pipe connected with the cap, so as to be in comnniniration with the mixture passage. The outlet pipe contains a valve l) which may be closed or opened as required. The cap I; has a tubular neck 7), internally threaded near its upper end. This neck below the threaded portion has several lateral holes 6 through it which serve as air inlets; and the cap has a hole through it communicating with the tubular neck.

l.) represents a gas valve casing. It is screwed into the neck. is. tubular. and has a small hole (I through its lower end,-which hole is provided with a ball valve F. The

upper end of this tubular casing has a latcral gas inlet port 4 with which is connccted a small pipe G which is to be led to and connected with some suitable supply of gas. Preferably, it is connected with the acetylene gas tank. The size of this gas in let port is controlled by a conical valve 11 which screws through the side of the valve casing.

\Vithin the cylinder A, whose upper end constitutes the mixing chamber is a freely movable but fairly well fitted cylindrical piston valve J, to the upper end of which is connected a rod It which goes up through the air inlcthole b in the cap and into the lower end of the hole (1 in the valve casing. Under normal conditions, this piston valve rests on the bottom of the casing with its top edge below the lower edge of the annular outlet openings Z)", and the upper end of this pin lies close to the ball valve referred to. There is a small hole a in the bottom of the cylinder A.

in order that this device may be called into action when the outlet pipe C is connected with the engine manifold, the regularengine throttle is closed. and the valve E is opened. The result will be that substantially all of the mixture which will be sucked into the engine cylinders by their pistons will be drawn from this rlcvico through the pipe C. The pistbn valve J is constructed of such weight that when the partial vacuum conditions in the mixing chamber are such as result from a reduction of pressure to onehalf pound, more or less, below atmospheric pressure. the valve will be raised far enough to completely lift the ball valve from its seat.

' upward movement of the valve such as will volume of the mixture will be drawn into with said mixture outlet, a valve in said If there be any increase in vacuum in the mixing chamber beyond that which causes the piston valve to lift far enough to open wide the ball valve, there will be a further said mixture outlet, a valve for the gas inlet, a piston valve in said chamber adapted to be raised by a decrease in pressure within said chamber and to progressively close the mixture outlet'as it rises, and a rod fixed to said piston valve, and adapted to engage with an open the inlet'valve.

3. In a gas mixture producer, the combination of a cylinder having an air vent in its lower end and having an annular mix ture outlet through its side walls, and a cap secured to said cylinder and forming the top thereof, and containing an annular mixture passageway with which the annular outlet port communicates, a discharge pipe connected with said cap and communicating with said passageway, said cap having a hole through its top communicating with the interior of the cylinder and having a tubular neck in which are lateral air inlet passages, a gas valve casing screwing into said neck and containing a port through its lower end which communicates with the interior of said tubular neck and having a gas inlet, and adjustable valve for controlling the size of said inlet, a lift valve for closing the gas outlet of said valve casing, a piston valve within said cylinder, and a rod fixed thereto and extending upward into position to lift the gas valve when the said piston is raised.

In testimony whereof, I hereunto ailix my signature in the presence of two witnesses.

I ALANSON P. BRUSIL Witnesses E. L. THURSTON, H. R. SULLIVAN.

partially close the outlet (1 The extent of upward movement will depend on the degree of vacuum ab c it; and the farther up it moves the more will it close the outlet openings of.

The result of the above describedaction. of the parts under various conditions of use will be that there can never be any great change of vacuum conditions in the mixing chamber, and therefore the quality of the mixture will remain uniform. Moreover, since the size of the discharge openings a are reduced in proportion to the increase of vacuum in pipe C,,a substantially constant said pipe on each induction stroke of an engine piston.

Having described my invention, I claim: 1. In a gas mixture producer, a mixing chamber havmg an an inlet, a gas inlet, and a mixture outlet, an outlet pipe connected mixing chamber adapted to be moved by variations of pressure in said chamber and by said movement to more or less completely close said mixture outlet, a valve for the gas inlet, and means wherebysaid gas valve is opened by the suctioninduced movement of the first named valve.

2. In a gas mixture producer, a mixing chamber having an air inlet, a gas inlet, and a' mixture outlet through the side walls of said chamber, an outlet pipe connected with @opfleu of this patent may be obtained for five cents each, by addressing the Gommissioner of Batentu, Washington, D. 62. 

